Over the past 110 years, 32 279 boys and 24 337 girls have been named Harley. The name Harley ranks 566th in the United States among the most common names for boys. For the first time more than ten times newborns were named Harley in 1910. The peak of popularity of the name Harley came in the 1910s and 1920s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.